Don’t worry if you get the following message when you upgrade to oik version 1.2
The plugin oik/oik-quicktags.php has been deactivated due to an error: The plugin does not have a valid header.
Just visit oik options > Buttons to re-enable the  quicktag
In oik version 1.2 we have reduced the number of plugins that you need to enable. You can now enable the oik helper buttons for TinyMCE and the Advanced HTML text editor by clicking on checkboxes in the oik options > Buttons page.
Note: If you select the ALL shortcodes then the  quicktag for HTML editor will also become active.